Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 3, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jun 12, 2021, 7:59 PM EDT for Livingston County, Washtenaw County, Michigan. It was in force for 76 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 12, 2021, 7:59 PM EDT (23:59 UTC)
- Expired
- Jun 12, 2021, 9:15 PM EDT
- In force
- 76 min
- Issued by
- NWS Detroit, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Livingston County, MI, Washtenaw County, MI
The radar
The Detroit radar (KDTX), 55 km from the middle of the area, began a volume at 00:05 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 12, 8:32 PM EDT | HAIL 1 | Dexter, MI | ALSO ESTIMATED 50 MPH WINDS. |
| Jun 12, 8:45 PM EDT | HAIL 1 | 3 Wnw Ann Arbor, MI | QUARTER SIZED HAIL REPORTED NEAR N MAPLE RD AND DEXTER AVE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 12.0 hours before the alert went out and 59 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 5 J/kg
- Mixed-layer CIN
- -240 J/kg
- Mixed-layer LCL
- 714 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
851
WUUS53 KDTX 122359
SVRDTX
MIC093-161-130115-
/O.NEW.KDTX.SV.W.0003.210612T2359Z-210613T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
759 PM EDT Sat Jun 12 2021
The National Weather Service in Detroit/Pontiac has issued a
* Severe Thunderstorm Warning for...
Southwestern Livingston County in southeastern Michigan...
Washtenaw County in southeastern Michigan...
* Until 915 PM EDT.
* At 758 PM EDT, a severe thunderstorm was located near Pinckney,
moving southeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Chelsea around 815 PM EDT.
Dexter around 825 PM EDT.
Ann Arbor around 840 PM EDT.
Saline around 855 PM EDT.
Milan around 915 PM EDT.
Other locations impacted by this severe thunderstorm include
Pittsfield Township, Whittaker, Plainfield, Hudson Mills Metropark,
Bridgewater, Delhi Mills, Pleasant Lake, Barton Hills, Pinckney State
Recreation Area and Hudson Mills.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4253 8414 4243 8367 4209 8354 4207 8413
TIME...MOT...LOC 2358Z 326DEG 19KT 4243 8400
HAIL...1.00IN
WIND...60MPH
$$
BT3 follow-up statements
024
WWUS53 KDTX 130019
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
819 PM EDT Sat Jun 12 2021
MIC093-130027-
/O.CAN.KDTX.SV.W.0003.000000T0000Z-210613T0115Z/
Livingston MI-
819 PM EDT Sat Jun 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LIVINGSTON COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4242 8413 4243 8367 4209 8354 4208 8397
4207 8413
TIME...MOT...LOC 0017Z 325DEG 19KT 4235 8390
$$
MIC161-130115-
/O.CON.KDTX.SV.W.0003.000000T0000Z-210613T0115Z/
Washtenaw MI-
819 PM EDT Sat Jun 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR WASHTENAW COUNTY...
At 817 PM EDT, a severe thunderstorm was located over Dexter, moving
southeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Ann Arbor around 835 PM EDT.
Saline around 850 PM EDT.
Milan around 915 PM EDT.
Other locations impacted by this severe thunderstorm include Hudson
Mills, Pittsfield Township, Whittaker, Lyndon Township, Hudson Mills
Metropark, Bridgewater, Delhi Mills, Pleasant Lake and Barton Hills.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4242 8413 4243 8367 4209 8354 4208 8397
4207 8413
TIME...MOT...LOC 0017Z 325DEG 19KT 4235 8390
HAIL...1.00IN
WIND...60MPH
$$
BT848
WWUS53 KDTX 130038
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
838 PM EDT Sat Jun 12 2021
MIC161-130115-
/O.CON.KDTX.SV.W.0003.000000T0000Z-210613T0115Z/
Washtenaw MI-
838 PM EDT Sat Jun 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR EASTERN WASHTENAW COUNTY...
At 836 PM EDT, a severe thunderstorm was located near Dexter, moving
southeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...At 832 PM a trained spotter reported quarter size hail in
Dexter.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Ann Arbor around 840 PM EDT.
Saline around 900 PM EDT.
Milan around 925 PM EDT.
Other locations impacted by this severe thunderstorm include
Bridgewater, Pittsfield Township, Delhi Mills, Pleasant Lake,
Whittaker and Barton Hills.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4233 8392 4237 8378 4229 8362 4209 8354
4208 8402
TIME...MOT...LOC 0036Z 334DEG 17KT 4228 8384
HAIL...1.00IN
WIND...60MPH
$$
BT411
WWUS53 KDTX 130107
SVSDTX
Severe Weather Statement
National Weather Service Detroit/Pontiac MI
907 PM EDT Sat Jun 12 2021
MIC161-130116-
/O.EXP.KDTX.SV.W.0003.000000T0000Z-210613T0115Z/
Washtenaw MI-
907 PM EDT Sat Jun 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WASHTENAW COUNTY WILL
EXPIRE AT 915 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
LAT...LON 4233 8392 4237 8378 4229 8362 4209 8354
4208 8402
TIME...MOT...LOC 0106Z 326DEG 19KT 4216 8373
$$
BTThe office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 8:43 PM EDT | Special Weather Statement | DTX | Lenawee, Monroe | 62 min |
| Jun 12, 4:22 PM EDT | Special Weather Statement | DTX | Bay, Midland | 53 min |
| Jun 12, 5:18 PM EDT | Special Weather Statement | DTX | Saginaw, Shiawassee | 57 min |
| Jun 12, 5:38 PM EDT | Severe Thunderstorm Warning | DTX | Saginaw, Shiawassee | 67 min |
| Jun 12, 6:45 PM EDT | Severe Thunderstorm Warning | DTX | Livingston, Shiawassee | 75 min |
| Jun 12, 7:42 PM EDT | Special Weather Statement | DTX | Bay, Midland | 93 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.